Casing-head and tubing-anchor



Nd. 750,428. A 'PATENTEN JAN. 26, 1904.

- A JQGpBOYGE.

CASING HEAD AND TUBING ANCHOR.

APPLICATION FILED FEB. 17, 1903.

N0 MODEL.

Atlomey UNITED V STATES Patented January 26, 1904.

PATENT OEEIcE.

JAMES C. BOYCE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO OIL WELL SUPPLY COMPANY, 'OF PITTSBURG, PENNSYLVANIA, A COR- PORATION OF PENNSYLVANIA.

CASING-HEAD AND TUBING-ANCHOR.

SPECIFICATION forming part of Letters Patent No. 750,428, dated January 26, 1904.

A li ati fil d February 17, 1903. Serial No. 148,829. (No model.)

.To all, whom it may concern:

. Be it known that I, JAMES C. BoYoE, acitizen of the United States, residing at Pittsburg, in the county of Allegheny, State of Pennsylvania, have invented certain new and useful Improvements in Casing-Heads and Tubing- Anchors; and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which Figure 1 is a view in elevation of a casinghead and tubing-anchor rods embodying my invention, together with a portion of the tubing and easing with which the same are connected. Fig. 2 is a view of the same, taken at right angles to Fig. 1. Fig. 3 is a top or plan 'view of the casing-head, the tubing being in section and the anchor-rods and clamp removed.

Like symbol-s refer to like parts wherever they occur."

My invention relates to that class of devices employed in operating oil-wells for the purpose of maintaining the fixed relation between the casing-head and tubing and counteracting the tendency of the pumping mechanism and pressure within the casing to disturb said operative relation of the tubing and casing-head. Heretofore, so far as I am aware, this class of devices or tubing-anchors have, where combined directly with the casing-head, been of'a character which did not permit of their ready removal without disconnecting the gas-pipes from the casing-head, a highly objectionable matter and not permissible under ordinary conditions where the tubing is to be drawn or simply adjusted with relation to the casinghead. To avoid such objections, the anchors should be readily removable from the casinghead without displacement of any of the workihg connections of the casing-head, and to effect this I combine the casing-head and anchor-rods by means of cast-off connections between the anchor-rods and casing-head, said connections being preferably of a hook-andeye character, and such a construction embodies my invention.

I will now proceed to describe my invention In the drawings, A indicates the upper end of a string of easing; B, the casing-head attached thereto; C, a section of tubing passing through the casing-head and into the casing,

and 0 a tubing-coupling.

The casing head B will have the usual threaded nipples b for the reception of the ends of the gas-pipe which lead from the casing-head and may be provided with a stuflingbox d, having a gland e, secured by the usual bolts f, or any equivalent means for packing the tubing C where it enters the casing-head I) may be employed.

In line with and above the nipples 7) are formed, preferably integral with the casinghead, perforated lugs or eyes 9 for the reception of the lower hooked ends of anchor-rods H.

H H indicate anchor-rods having at their lower ends the hooks 7i and threaded at their opposite ends, which pass through a clamp I, for the reception of nuts K, whereby the anchor-rods are strained between the casinghead and said clamp I.

I indicates a tubing-clamp, which may be comprised of the separable sections having a central tube-passage and lateral passages'for the anchor-rods H, said sections after application to the tubing being secured to each other and to the tubing C by bolts and nuts 2: or in other suitable manner.

The several elements of the device having the characteristics pointed out are combined by first applying the sections of clamp I to the tubing C above the coupling 0 (which forms a seat therefor in case the clamp is not made to grip the tubing) and connecting the sameby the bolts and nuts 2', next passing the hooks It on the lower end of the anchorrods H through the perforated lugs or eyes g of the casing-head and the upper threaded ends of the anchor-rods through the lateral passages of the clamp I, and finally applying the nuts K to the upper ends of the anchorrods above the clamp and screwing them home against the clamp I until the anchor rods are strained between the head and the clamp,

whereby the tubing will be held in a fixed relation to the casing-head notwithstanding the tendency to displacement incident to the operation of the pumping mechanism and the pressure within the casing.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination of a casing-head and anchor rods having cast ofl connections, a tubing-clamp, and means for straining the anchor-rods between the tubingclamp and casing-head, substantially as and for the purposes specified.

2. The combination of a casing-head and anchor-rods said head and rods having castofi' connections comprising hook-zind-eye devices, a tubing-clamp, and means for connecting the anchor-rods to the tubing-clamp, substantially as and for the purposes specified.

3. The combination of a casing-head and anchor-rods, said head and rods having cast-, 011' connections comprising perforated lugs or eyes on the casing-head and hooks on the extremities of the anchor-rods, a tubing-clamp, and means for adjustably connecting the anchor-rods with the tubing-clamp, substantially as and for the purposes specified.

4. The combination of a casing-head having a stufiing-box for the passage of the tubing, anchor-rods threaded at one end and provided with nuts for straining said anchor rods, cast-off connections between the casing-head and anchor-rods comprising perforated lugs or eyes on the head and hooks on the rods, and a tube-clamp between which and the cas ing-head the anchor-rods are strained, substantially as and for the purposes specified.

5. The combination of a casing-head having nipples for the reception of the ends of the gas-pipes, anchor-rods, cast-ofi? connections between the casing-head and the anchor-rods comprising perforated lugs on the casing head above and in line with the nipples thereof and hooks on the anchor-rods, a separable tube-clamp having passages for the anchorrods, and means for straining the anchorrods between the tube-clamp and casing-head, substantially as and for the purposes specified.

In testimony whereof I aflix my signature, in presence of two witnesses, this 13th day of February, 1903.

' JAMES C. BOYCE. Witnesses:

C. H. Goonwm,

LOUIS C. SANDs, Jr. 

